
from rest_framework import serializers

from goods.models import SKU
from orders.models import OrderInfo, OrderGoods

class SKUSerializer(serializers.ModelSerializer):
    # 订单商品序列化器
    class Meta:
        model = SKU
        fields = ('name','default_image')



class OrderGoodsSerializer(serializers.ModelSerializer):
    # 订单商品序列化器
    sku=SKUSerializer()
    class Meta:
        model = OrderGoods
        fields = ('count','price','sku')


class OrderInfoSerializer(serializers.ModelSerializer):
    # 子表嵌套父表返回
    # 关联嵌套序列化返回
    user=serializers.StringRelatedField(read_only=True)
    user_id=serializers.IntegerField(read_only=True)

    # 父表嵌套字表返回
    skus=OrderGoodsSerializer(many=True)

    class Meta:
        model=OrderInfo
        fields='__all__'

